As for the rest of the Beckham brood, "We've got three amazing boys, but there is a lot of energy with them. With Harper, she's so calm, she's so ladylike," David Beckham said. "The way she holds herself, the way she breathes, the way she smiles – it's amazing."

Adding that the newborn is already sleeping through the night, the proud father vowed that when Harper gets older, he and her three older brothers – Brooklyn, 12, Romeo, 9, and Cruz, 6 – will be "overprotective in every way possible."